<meta charset="UTF-8">
<style>
    ul{
        background: skyblue;
    }
    ul li{
        background: springgreen;
        border: 1px solid gray;
        margin: 10px;
    }
    .tips{
        position: absolute;
        display: none;
        pointer-events: none;
    }
    .tips-text{
        width: 150px;
        height: 40px;
        line-height: 40px;
        font-size: 20px;
        background: pink;
        text-align: center;
    }
    .tips-top{
        width: 0;
        height: 0;
        position: relative;
        left: 30px;
        border-left: 15px solid rgba(255,255,255,0);
        border-right: 15px solid rgba(255,255,255,0);
        border-bottom: 15px solid pink;
    }
</style>
<ul>
    <li>00001</li>
    <li>00002</li>
    <li>00003</li>
    <li>00004</li>
    <li>00005</li>
</ul>
<div class="tips">
    <div class="tips-top"></div>
    <div class="tips-text">
    
    我是提示信息
    </div>
</div>
<script src="./utils.js"></script>
